If a production process makes $5000$ units that sell for $$4$ each using a labor pool of $4$ employees each working for $6$ hours and making $$12$ per hour, which answer best describes the productivity measure?

$$69\mathrm{.}44$ revenue per labor $

$0\mathrm{.}0144$ unites per minute

$$0\mathrm{.}0144$ revenue per unit

$69\mathrm{.}44$ units per labor dollar

$$0\mathrm{.}833$ per unit of revenue